“…is known to cause reduced contractility and force of contraction, as well as a decrease in heart rate at higher concentrations, we did not expect to see a corresponding increase in toxicity and injury markers. It is used clinically for treatment of angina, hypertension, and atrial dysrhythmias (Elliott & Ram, 2011;Lieu, Fornari, Ramos, Hatcher, & Clements-Jewery, 2011). FCCP, a protonophore, disrupts the mitochondrial membrane potential causing metabolic inhibition resulting in reduced excitation-contraction coupling.…”